*Heading
 S4R Elements
*Node
      1,          -5.,          2.5,           0.
      2,          -5.,           0.,           0.
      3,          -5.,         -2.5,           0.
      4,         -2.5,          2.5,           0.
      5,         -2.5,           0.,           0.
      6,         -2.5,         -2.5,           0.
      7,           0.,          2.5,           0.
      8,           0.,           0.,           0.
      9,           0.,         -2.5,           0.
     10,          2.5,          2.5,           0.
     11,          2.5,           0.,           0.
     12,          2.5,         -2.5,           0.
     13,           5.,          2.5,           0.
     14,           5.,           0.,           0.
     15,           5.,         -2.5,           0.
*Element,type=z1,elset=one,file=lib_grav_shell3d
10001,1,3,13,15
*substructure property,elset=one
*element,type=spring1,elset=spr
10002,13
*spring,elset=spr
3,
2000,
*Nset, nset=Set4
  1,  3,
*Nset, nset=Set5
 15,
** ----------------------------------------------------------------
*Step, name=Stp1, inc=1000,unsym=no,extrap=no
Small Deformation
*Static
0.1, 1., 0.1, 0.1
*controls,param=field
1.e-8,
*Boundary
Set4, PINNED
*Dload
10001,Grav,20,0,0,-1 
*output,field,Var=Preselect
*substructure path,enter=10001
*output,field
*node  output
u,
*element output
s,
*substructure path,leave
*End Step